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Specialized - Magnetron ·Magnetron

21SP40

Low-power magnetron oscillator designed for continuous or keyed microwave operation over approximately 1.8–2.1 GHz.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
1.5 V / 3.8 A

Description

Low-power magnetron oscillator for continuous or keyed operation over approximately 1800 to 2100 MHz.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
1.5 V
Nominal heater current
3.8 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Magnetron

X-ray radiationInterelectrode capacitances
Max plate voltage
950 V

Published ratings and characteristics promoted from the source where directly stated.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

195X Tesla

Published operating points and test conditions from this source.

SECTION 1

Magnetron

Characteristics

  • Heater or filament voltage

    1.5 V

    Published nominal value

  • Heater or filament current

    3.8 A

    Published nominal value

Other

  • Operating frequency

    1800 to 2100 MHz

    Magnetron oscillator

  • Pulse anode current maximum

    140 mA

    Keyed operation